Absolute fiber optic position sensor provides EMI immunity
Micronor MR330 series FOP sensor is an all-optical design immune to harsh environmental conditions.
Micronor’s absolute Fiber Optic Position Sensor (FOPS), the Model MR330 series position sensor, is an all-optical design immune to any electro-magnetic interference such as lightening, radiation, magnetic fields and other harsh environmental conditions. The fiber optic aspect of the sensor also makes it suited for long distance position sensing over hundreds of meters without being affected by ground loop problems.
The absolute FOPS uses a novel optical technique embedded in a passive sensor and active controller connected by a duplex fiber optic link. The controller transmits a burst of light to the code disk in the sensor which accurately modulates the spectral components of the light based on angular position. The position information is imprinted in the optical spectrum of the light and guided back to the controller for precise position readout. The sensor requires no electrical power and houses no electronic components whatsoever.
The MR330's accuracy and EMI immunity allegedly make it an ideal sensor for applications that require precise motion control and position measurement in challenging environments: oil rigs, satellite antennas, solar panel arrays, actuator systems, transportation systems, steel mills and medical instrumentation. The sensor is also classified as a “simple apparatus” and meets ATEX requirements for use in mines and other hazardous environments. The sensor's immunity to lightning make it especially suited for outdoor applications such as wind turbines and antennas.
This innovative product measures absolute angular position from 0° to 360° with 13-bit (8192 count) resolution at speeds exceeding 2500 rpm. A complete system consists of the MR332 Passive Sensor, and MR330 Controller which interconnect via a duplex fiber optic link. The fiber cable used is readily available industry standard 62.5/125 µm multimode fiber with Duplex LC connections. The MR330 controller is powered by 24 V dc and features multiple built-in interfaces and protocols for position read-out making it compatible with most any motion systems.
The MR330 controller’s powerful embedded processor and firmware offers an extended set of built-in functions and multiple interface options not available in conventional encoders or resolvers. The Model MR330-1 SSI Controller offers SSI, USB, RS485 Serial, Modbus RTU, two analog outputs (4-20 mA and ±10 V) and two digital set points.
See more sensors at www.controleng.com/sensors.
- Edited by Gust Gianos, Control Engineering, www.controleng.com
Case Study Database
Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.
These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.
Click here to visit the Case Study Database and upload your case study.
2012 Salary Survey
In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.